CoMato/css/style.css

body,
html {
  margin: 0;
  padding: 0;
  height: 100%;
}

nav {
  border-bottom: 2px solid #ccc;
  margin: 0;
  grid-area: nav;
  padding: 0.3em 2em;
}

ul {
  margin: 0;
  padding-left: 10pt;
  list-style: none;
}

ul:nth-child(1) {
  padding: 1em 1em;
}

li:hover {
  background-color: rgb(0, 0, 130);
  color: white;
}

li {
  cursor: pointer;
  user-select: none;
}

li::before {
  content: "";
  color: black;
  display: inline-block;
}

.caret-down::before {
  transform: rotate(90deg);  
}
.nested {
  display: none;
}
.active {
  display: block;
}
.caret::before {
  content: "\25B6";
  margin-right: 6px;
}

.container {
  display: grid;
  grid-template-columns: max-content auto;
  grid-template-rows: max-content auto max-content;
  height: 100%;
  grid-template-areas:
    "nav nav"
    "aside section"
    "footer footer";
}
section {
  grid-area: section;
}

aside {
  margin: 0;
  height: 100%;
  grid-area: aside;
  overflow-y: scroll;
  margin-right: 2px solid #c3c3c3;
}

footer {
  border-top: 2px solid #c3c3c3;
  grid-area: footer;
  text-align: right;
  padding: 0.3em 2em;
}

sub {
  display: block;
}